摘要
对在规则波中迎浪航行的大型油轮KVLCC2船模,为了研究流体黏性对船舶运动和水动力的影响,分别采用求解RANS方程和求解欧拉方程的方法,应用CFD软件STAR-CCM+对黏性流场和无黏流场进行了数值模拟。采用GCI方法对数值不确定度进行了分析,验证了数值方法的有效性;采用湍流模型和无黏流模型对船舶在一系列波长的波浪中的运动和水动力进行了数值预报,并将数值结果与现有实验数据进行了比较。结果表明,流体黏性对船舶运动影响很小,对共振状态附近的波浪增阻有一定的影响。总体上,对船舶迎浪航行流场的数值模拟,忽略黏性能保证一定的计算精度而提高计算效率。
In order to investigate the effect of fluid viscosity on ship motion and hydrodynamics, numerical simulations of the flow around a KVLCC2 model advancing in regular head waves are carried out by using the CFD software STAR-CCM+ to solve the RANS equations for the viscous flow and the Euler equations for the inviscid flow. The numerical uncertainties are analyzed by using GCI method for verification of the numerical method. The ship motions and hydrodynamics in waves at a wide range of wavelengths are numerically predicted using the turbulence flow model and the inviscid flow model respectively, and the numerical results are compared with the available model test data. It is shown that fluid viscosity has a minor effect on ship motions but a non-negligible effect on the added resistance near the resonance conditions. As a whole, satisfactory accuracy and higher efficiency of numerical simulations of the flow around the ship model advancing in head waves can be achieved by neglecting the fluid viscosity.
作者
袁帅
邹早建
YUAN Shuai;ZOU Zao-jian(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2020年第2期179-187,共9页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金项目(51779140)。
关键词
迎浪
船舶运动
波浪增阻
数值模拟
流体黏性影响
head waves
ship motion
added resistance
numerical simulation
effect of fluid viscosity
